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Old Oct 06, 2010, 04:32 PM
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Four stroke flat diesel engine

I simply will look as flat block. It can be cast as a single unit. It did not need the division on the block and head. Because the pistons can be put at the bottom......
It is full 4 stroke engine.








Regards Andrew
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Old Oct 06, 2010, 07:30 PM
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I can't wait to see it in operation.
Keep us posted about your progress.
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Old Oct 06, 2010, 07:51 PM
It's Prime Time for Slime Time
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reminds me vaguely of a sterling engine... Cool!
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Old Oct 06, 2010, 09:46 PM
"Unnecessary Necessity"
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At first I found some similarity with the old JAWA motorcycle engine(a 2-strokes where two pistons are driven by a common crankpin and the two cylinders share a common combustion chamber with transfer in one cylinder and exhaust in the other). I didn't understand the third large cylinder and how it could be called 4-strokes, then I found that:
http://www.new4stroke.com/
and it became all clear, impressive work!
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Old Oct 07, 2010, 06:54 AM
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I was thinking that with a square or rectangular shape, it makes it easy to add cooling fins or drill it out for water cooling passages too. The overhead valve arrangement allows for the smallest combustion chamber size. The OP shows a side valve arrangement which might have problems with the combustion chamber volume being larger and longer. The combustion wave propagation patterns may be pretty bad with it that way.

One thought I had was maybe machining in a slot on each port and putting in a movable slide that would let you adjust the port timing. One could use a couple of push pull screws to move the slide up or down to change the port timing.
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Old Oct 07, 2010, 08:13 AM
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I saw some of the "twingles", short for twin single, that were in Allstate scooters mfg'd by Puch in Austria. Odd way to build a two stroke but they worked.

I hope you all don't mind a little history lesson: http://en.wikipedia.org/wiki/Twingle_engine
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Old Oct 10, 2010, 05:24 AM
NM2K
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Quote:
Originally Posted by I TOBOR View Post
I saw some of the "twingles", short for twin single, that were in Allstate scooters mfg'd by Puch in Austria. Odd way to build a two stroke but they worked.

I hope you all don't mind a little history lesson: http://en.wikipedia.org/wiki/Twingle_engine

In 1966, Sears was selling off all of their Puch motorcycles at ridiculously low prices. I was at the Camelback Mall in Phoenix, AZ and I got to ride one of the 250cc models around the parking lot for a half an hour or so. A couple of days before that, I test rode the new Suzuki X-6 Hustler, which was a street taggable bullet. The Sears Puch 250cc was no comparison to the Suzuki X-6 Hustler, but neither was its price. Sears was selling their Puchs for $250 with a warranty. The new Suzuki was going for $600 with a warranty. Being a broke GI, I nearly bought the Sears just to have some form of transportation.


Ed Cregger
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Old Oct 10, 2010, 08:53 AM
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I came real close to buying one of them back around that time too.
But I wound up getting a Yamaha 350 instead (the biggest motorcycle they made at that time). I knew a Air Force guy who had a Allstate/Puch 250. We used to tool around together with some others from time to time.
I lived near the Luke AFB in 1966.
In my opinion at the time, was that it looked obsolete and cheap. At that time the motorcycle factory wars were heating up with the Japanese trying to outdo each other every year with ever newer whizbang models and designs. it overwelmed and left all the other manufacturers in their wake.
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Old Oct 16, 2010, 12:27 AM
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Quote:
Originally Posted by I TOBOR View Post
I saw some of the "twingles", short for twin single, that were in Allstate scooters mfg'd by Puch in Austria. Odd way to build a two stroke but they worked.

I hope you all don't mind a little history lesson: http://en.wikipedia.org/wiki/Twingle_engine
Many thanks, for the proper orientation of the history of the engines.
Finally someone is doing with meaning.

I think that thanks to the good understanding of my design, is a good chance of making prototypes
Thanks now I have the time to show new cases:

But what you can see at the animated film of my engine, is only a cross section of the centre of cylinders.
It is no combustion chamber. You can see somewhere spark plug or injector?
My combustion chamber are behind this cross section about 2 cm!!
You must see photo (Galery), where is spark plug in my engine.
I can made Little tunel ,ball or others figures.
I am give name it Dynamic Chamber. It is asolutely new chamber , have a lot of advantages, which Ricardo can for himself about only to dream.
First advantages, are mechanically forced air in cylindrer. It is possible at tunel chamber 300 m/sec force speed(in normal chamber speed a good fire are about 30 m/sec).maybe are a good diesel engine ? (about 12000 RPM).What we will do with these such revolutionary possibilities, the time will show .



Regards Andrew
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Old Feb 28, 2011, 02:24 AM
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Good old poped and see what they are having a ...
And with the precision control valve, you can only dream.:tsk



Valve Float (4 min 21 sec)


Every cent given to the development of the "old" technology is turer wasted ...

Andrew
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Old Mar 27, 2011, 10:21 AM
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New animations half rotate engine:











And in scale 1:1 350 ccm intake volume:


http://www.new4stroke.com/halfrotatedxf.dxf Save and print file

Regards Andrew









or other new idea...

The cylinder can be made from an aluminum extrude...






Big air cooled



Small air cooled





star halfrotate





And "Stephenson second"






And story this inventions "step by step"
Story half rotate engine


Save these PDF files on your computer and print. These are drawings of the 2-liter engine on a scale of 1:1


http://www.new4stroke.com/section.pdf

http://www.new4stroke.com/long.pdf

Regards Andrew
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